<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\SoftDeletes;

class Product extends Model
{
    use SoftDeletes;

    protected $fillable = [
        'category_id',
        'name',
        'slug',
        'model',
        'summary',
        'description',
        'specs',
        'cover',
        'status',
        'sort',
        'seo_title',
        'seo_description',
    ];

    protected $casts = [
        'category_id' => 'integer',
        'sort' => 'integer',
    ];

    public function category(): BelongsTo
    {
        return $this->belongsTo(Category::class, 'category_id');
    }

    public function scopePublished($query)
    {
        return $query->where('status', 'published')->orderBy('sort')->orderBy('name');
    }

    public function seoTitle(): string
    {
        // 仅返回实体名；品牌后缀由视图统一以 ' - ' . $siteName 追加（products/show.blade.php:4），
        // 避免 Product::seoTitle() 与视图双重拼接导致标题品牌重复（审计 SEO-02）。
        return $this->seo_title ?: $this->name;
    }

    public function seoDescription(): string
    {
        return $this->seo_description ?: ($this->summary ?: $this->name);
    }
}